insereated GPLv3 stub

[avr-crypto-lib.git] / serpent.h

diff --git a/serpent.h b/serpent.h
index ab95f7eadad10a3bdf99e707160aac50f399fa24..ce266ed6c502d48c676102734c487c9125967aac 100644 (file)
--- a/serpent.h
+++ b/serpent.h
@@ -1,3 +1,21 @@
+/* serpent.h */
+/*
+    This file is part of the Crypto-avr-lib/microcrypt-lib.
+    Copyright (C) 2008  Daniel Otte (daniel.otte@rub.de)
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
 /* serpent.h
  * a bitsliced implementation of the serpent cipher for avr microcontrollers
  * author: Daniel Otte
@@ -15,8 +33,13 @@ typedef struct serpent_ctx_st {
        serpent_subkey_t k[33];
 }  serpent_ctx_t;
 
+#define SERPENT_KEY128 128
+#define SERPENT_KEY192 192
+#define SERPENT_KEY256   0
+
+
 /* key must be 256bit (32 byte) large! */
-void serpent_genctx(void * key, serpent_ctx_t * ctx);
+void serpent_genctx(void * key, uint8_t keysize, serpent_ctx_t * ctx);
 void serpent_enc(void * buffer, serpent_ctx_t * ctx);
 void serpent_dec(void * buffer, serpent_ctx_t * ctx);